chr19-41352717-G-A

Variant names:

• chr19-41352717-G-A
• rs1555755242
• NM_000660.7:c.328C>T

Variant summary

Our verdict is Likely pathogenic. The variant received 6 ACMG points: 6P and 0B. PM1 PM2 PP5_Moderate

The NM_000660.7(TGFB1):​c.328C>T​(p.Arg110Cys) variant causes a missense change involving the alteration of a non-conserved nucleotide. The variant was absent in control chromosomes in GnomAD project. Variant has been reported in ClinVar as Likely pathogenic (★).

• Frequency: Genomes: not found (cov: 31)
• Consequence: TGFB1 NM_000660.7 missense
• Clinical Significance: Likely pathogenic criteria provided, single submitter P:3
• Conservation: PhyloP100: 1.37
• Publications: 1 publications found

Genes affected

TGFB1 (HGNC:11766): (transforming growth factor beta 1) This gene encodes a secreted ligand of the TGF-beta (transforming growth factor-beta) superfamily of proteins. Ligands of this family bind various TGF-beta receptors leading to recruitment and activation of SMAD family transcription factors that regulate gene expression. The encoded preproprotein is proteolytically processed to generate a latency-associated peptide (LAP) and a mature peptide, and is found in either a latent form composed of a mature peptide homodimer, a LAP homodimer, and a latent TGF-beta binding protein, or in an active form consisting solely of the mature peptide homodimer. The mature peptide may also form heterodimers with other TGFB family members. This encoded protein regulates cell proliferation, differentiation and growth, and can modulate expression and activation of other growth factors including interferon gamma and tumor necrosis factor alpha. This gene is frequently upregulated in tumor cells, and mutations in this gene result in Camurati-Engelmann disease. [provided by RefSeq, Aug 2016]

TMEM91 (HGNC:32393): (transmembrane protein 91) Predicted to act upstream of or within hematopoietic progenitor cell differentiation. Predicted to be integral component of membrane. Predicted to be active in intracellular membrane-bounded organelle and membrane. [provided by Alliance of Genome Resources, Apr 2022]

ENSG00000255730 (HGNC:):

ACMG classification

Our verdict: Likely_pathogenic. The variant received 6 ACMG points.

• PM1: In a chain Latency-associated peptide (size 248) in uniprot entity TGFB1_HUMAN there are 9 pathogenic changes around while only 3 benign (75%) in NM_000660.7
• PM2: Very rare variant in population databases, with high coverage
• PP5: Variant 19-41352717-G-A is Pathogenic according to our data. Variant chr19-41352717-G-A is described in ClinVar as Likely_pathogenic. ClinVar VariationId is 488345.Status of the report is criteria_provided_single_submitter, 1 stars.

Variant Effect in Transcripts

ACMG analysis was done for transcript: NM_000660.7. You can select a different transcript below to see updated ACMG assignments.

RefSeq Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	TGFB1	NM_000660.7	MANE Select	c.328C>T	p.Arg110Cys	missense	Exon 1 of 7	NP_000651.3

Ensembl Transcripts

Selected	Gene	Transcript	Tags	HGVSc	HGVSp	Effect	Exon Rank	Protein	UniProt
	TGFB1	ENST00000221930.6	TSL:1 MANE Select	c.328C>T	p.Arg110Cys	missense	Exon 1 of 7	ENSP00000221930.4
	TMEM91	ENST00000539627.5	TSL:1	c.-30+1515G>A		intron	N/A	ENSP00000441900.1
	TGFB1	ENST00000600196.2	TSL:5	c.328C>T	p.Arg110Cys	missense	Exon 1 of 6	ENSP00000504008.1

Frequencies

GnomAD3 genomes Cov.: 31

GnomAD4 exome Cov.: 32

GnomAD4 genome Cov.: 31

ClinVar

Significance: Likely pathogenic

Submissions summary: Pathogenic:3

Revision: criteria provided, single submitter

Submissions by phenotype

Inflammatory bowel disease, immunodeficiency, and encephalopathy Pathogenic:2

Feb 27, 2019

SIB Swiss Institute of Bioinformatics

Significance: Likely pathogenic

Review Status: criteria provided, single submitter

Collection Method: curation

This variant is interpreted as a Likely pathogenic for Inflammatory bowel disease, immunodeficiency, and encephalopathy, autosomal recessive. The following ACMG Tag(s) were applied: PM2: Absent from controls (or at extremely low frequency if recessive) in Exome Sequencing Project, 1000 Genomes Project, or Exome Aggregation Consortium. PP3 : Multiple lines of computational evidence support a deleterious effect on the gene or gene product. PS3-Moderate : PS3 downgraded in strength to Moderate (PMID:29483653). PM3 : For recessive disorders, detected in trans with a pathogenic variant (PMID:29483653).

Dec 04, 2018

OMIM

Significance: Pathogenic

Review Status: no assertion criteria provided

Collection Method: literature only

Encephalopathy;C4749850:IL10-related early-onset inflammatory bowel disease Pathogenic:1

Jan 01, 2017

Klein lab, Ludwig-Maximilians-University

Significance: Pathogenic

Review Status: no assertion criteria provided

Collection Method: research

Variant is associated with primary immunodeficiency, inflammatory bowel disease and encephalopathy. Variant was found in compound heterozygosity with another variant in TGFB1 (c.1159T>C).

Computational scores

Source: dbNSFP v4.9

Name	Calibrated prediction	Score	Prediction
AlphaMissense	Pathogenic	0.85
BayesDel_addAF	Uncertain	0.089	D
BayesDel_noAF	Benign	-0.11
CADD	Pathogenic	32
DANN	Uncertain	0.99
Eigen	Benign	0.12
Eigen_PC	Benign	-0.0063
FATHMM_MKL	Uncertain	0.78	D
LIST_S2	Uncertain	0.90	D
M_CAP	Pathogenic	0.45	D
MetaRNN	Uncertain	0.62	D
MetaSVM	Benign	-0.51	T
PhyloP100		1.4
PrimateAI	Uncertain	0.67	T
PROVEAN	Uncertain	-4.0	D
REVEL	Uncertain	0.38
Sift	Pathogenic	0.0	D
Sift4G	Pathogenic	0.0010	D
Vest4		0.38
MutPred		0.80		Gain of catalytic residue at E107 (P = 0.0727)
MVP		0.79
MPC		1.9
ClinPred		1.0	D
GERP RS		3.0
PromoterAI		-0.070	Neutral
RBP_binding_hub_radar		0.0
RBP_regulation_power_radar		1.1
Mutation Taster		=23/77	disease causing (ClinVar)

Splicing

Name	Calibrated prediction	Score	Prediction
SpliceAI score (max)		0.0		Details are displayed if max score is > 0.2

Find out detailed SpliceAI scores and Pangolin per-transcript scores at spliceailookup.broadinstitute.org

Other links and lift over

dbSNP: rs1555755242; hg19: chr19-41858622;